Knights Hospitaller

The Order of Knights of the Hospital of Saint John of Jerusalem , commonly known as the Knights Hospitaller or the Order of Saint John, was a medieval and early modern Catholic military order. It was headquartered in the Kingdom of Jerusalem until 1291, on the island of Rhodes from 1310 until 1522, in Malta from 1530 until 1798 and at Saint Petersburg from 1799 until 1801. Today several organizations continue the Hospitaller tradition, most importantly the Sovereign Military Order of Malta.

The Hospitallers arose in the early 11th century, during the time of the Cluniac Reform, as a group of individuals associated with an Amalfitan hospital in the Muristan district of Jerusalem, dedicated to John the Baptist and founded around 1099 by Gerard Thom to provide care for sick, poor or injured pilgrims coming to the Holy Land. Some scholars, however, consider that the Amalfitan order and hospital were different from Gerard Thom's order and its hospital.

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